Seems like this might be a good time to split off a new topic.
I think I’ve taken the idea far enough for now, apologies for the derail. My thinking on this needs time to mature.
I like the tweaks! I want one!
love it! Want as well!! if there are extras of course
Love the panel. Don’t change the font.
For me it’s not immediately clear where to put my jack with LFO output for cutoff and where for resonance, but I don’t know synthesis very well yet, so maybe that’s just me.
Both are for the cutoff frequency, but the v/oct has an exponential relation. So if you tune the Filter, you can play it like a vco! Then you can use the linear cv for vibrato or something
Resonance has no CV.
Sure! Not tested yet, so be patient I will order in a few days and then also put this on github.
Thank you for explanation.
I wouldn’t count a module as finished until you’ve tested it. But that’s probably just the software developer in me speaking.
I suppose the difference is you can test it until you finish it. At least in a way.
Where did you pick up your BC557C? I found the 547s but no luck on the 5’s
DigiKey has the BC557CZL1, listed as obsolete but they have stock:
Tayda has the BC557B, which is a lower gain version than the BC557C. Might work.
The docs say in reference to the paired BC547C, “The specified transistor is BC547C, but most small-signal NPN transistors should work just fine.” No similar remarks about the BC557C, but that’s probably a good sign — having said you can sub the ladder transistors, if the expo converter transistors were critical they’d say so, right?
it can drive you crazy looking for parts . can’t find it , change one dam letter / number in your search and then there is a million of them .
Yeah, just try out any similar transistor you have around…
@klausklaerwerk used a 559C and it works:
is there a BOM for this?
I just received one from @CTorp
Just look up the Kassutronics build guide/BOM. All of his guides are really great.
Thank ya good sir
Except you have to buy 6,010 of the BC557CZLs…lol. I don’t think i want to be a BC557C store
EDIT: Mouser has BC547C’s for 7.6 cents at qty 100.
yeah I had to buy 200 @ 24.9k resistors the min. , of which I will use less than 6 and probably never touch the rest in this life time …
I’m just gonna use one of the 557Bs that i already have around. As far as the 547s the footnote was talking about using 2N3904s so I don’t think it’s really that important.